GENERAL DESCRIPTION

The AD7175-8 is a low noise, fast settling, multiplexed, 8-/16-channel (fully/pseudo differential) Σ-Δ analog-to-digital converter (ADC) for low bandwidth inputs. It has a maximum channel scan rate of 50 kSPS (20 μs) for fully settled data. The output data rates range from 5 SPS to 250 kSPS.

FEATURES

Fast and flexible output rate: 5 SPS to 250 kSPS

Channel scan data rate of 50 kSPS/channel (20 μs settling)

Performance specifications

17.2 noise free bits at 250 kSPS

20.2 noise free bits at 2.5 kSPS

24 noise free bits at 20 SPS

INL: ±1 ppm of FSR

85 dB filter rejection of 50 Hz and 60 Hz with 50 ms settling

User configurable input channels

8 fully differential channels or 16 single-ended channels

Crosspoint multiplexer

On-chip 2.5 V reference (±2 ppm/°C drift)

True rail-to-rail analog and reference input buffers

Internal or external clock

Power supply: AVDD1 ? AVSS = 5 V, AVDD2 = IOVDD = 2 V to

5 V (nominal)

Split supply with AVDD1/AVSS at ±2.5 V

ADC current: 8.4 mA

Temperature range: ?40°C to +105°C

3- or 4-wire serial digital interface (Schmitt trigger on SCLK)

Serial port interface (SPI), QSPI, MICROWIRE, and DSP

compatible

APPLICATIONS

Process control: PLC/DCS modules

Temperature and pressure measurement

Medical and scientific multichannel instrumentation

Chromatography

AD7175-8BCPZ屬于集成電路（IC） > 模數(shù)轉(zhuǎn)換器（ADC）。亞德諾半導體技術有限公司制造生產(chǎn)的AD7175-8BCPZ模數(shù)轉(zhuǎn)換器（ADC）模數(shù)轉(zhuǎn)換器（ADC、A/D 或 A 轉(zhuǎn) D）對模擬信號進行采樣，例如由麥克風采集的聲音或傳感器的輸出，然后將其轉(zhuǎn)換為數(shù)字信號。一般來說，數(shù)字輸出是二進制補碼二進制數(shù)，與輸入成比例。輸入類型可能是差分、偽差分或單端輸入。模數(shù)轉(zhuǎn)換器可按照位數(shù)、采樣率、輸入數(shù)、接口、轉(zhuǎn)換器數(shù)和架構（例如自適應增量、雙斜率、折疊、流水線、SAR、三角積分、兩步式）進行選擇。